Here some updates on hardware memory tagging from Google regarding future Android hardware.
Microsoft, FreeBSD, ARM collaboration on CHERI
https://msrc-blog.microsoft.com/2020/10/14/security-analysis...
Oracle with ADI
https://docs.oracle.com/cd/E37838_01/html/E61059/gqajs.html
Apple with pointer authentication,
https://developer.apple.com/documentation/security/preparing...
ok I admit defeat on this. I can't barely believe I forgot that u_u;